Obsidian Control Systems Cypress EZ-USB 2121S/2125S - EEPROM missing - two ways of downloading and installing the driver

Cypress EZ-USB 2121S/2125S - EEPROM missing is a USBDevice device. This Windows driver was developed by Obsidian Control Systems. The hardware id of this driver is USB/VID_0547&PID_2125; this string has to match your hardware.

1. Manually install Obsidian Control Systems Cypress EZ-USB 2121S/2125S - EEPROM missing driver

1. Download the driver setup file for Obsidian Control Systems Cypress EZ-USB 2121S/2125S - EEPROM missing driver from the link below. This is the download link for the driver version 16.47.9.686 released on 2022-02-07.
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3. Start the driver setup file from a Windows account with the highest privileges (rights). If your User Access Control (UAC) is running then you will have to accept of the driver and run the setup with administrative rights.
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5. Go through the driver setup wizard, which should be quite straightforward. The driver setup wizard will analyze your PC for compatible devices and will install the driver.
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7. Restart your PC and enjoy the updated driver, it is as simple as that.
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This driver is digitally signed by Obsidian Control Systems.
File size of the driver: 2625983 bytes (2.50 MB)
Driver rating 5 stars out of 41480 votes.
This driver will work for the following versions of Windows:

• This driver works on Windows 2000 64 bits
• This driver works on Windows Server 2003 64 bits
• This driver works on Windows XP 64 bits
• This driver works on Windows Vista 64 bits
• This driver works on Windows 7 64 bits
• This driver works on Windows 8 64 bits
• This driver works on Windows 8.1 64 bits
• This driver works on Windows 10 64 bits
• This driver works on Windows 11 64 bits

2. How to install Obsidian Control Systems Cypress EZ-USB 2121S/2125S - EEPROM missing driver using DriverMax

The advantage of using DriverMax is that it will setup the driver for you in the easiest possible way and it will keep each driver up to date, not just this one. How easy can you install a driver with DriverMax? Let's follow a few steps!

1. Open DriverMax and push on the yellow button named ~SCAN FOR DRIVER UPDATES NOW~. Wait for DriverMax to analyze each driver on your computer.
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3. Take a look at the list of detected driver updates. Search the list until you find the Obsidian Control Systems Cypress EZ-USB 2121S/2125S - EEPROM missing driver. Click on Update.
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5. That's all, the driver is now installed!
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